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Strategy, Content & Technology for brands

We manage your projects
through a brand lens.

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Essendi
Léon Grosse
LNB
Louis XIII
Maison Bucher
Zilo
Client ABC

ELEF is not an agency, not a consultancy,

but both

We combine business-focused strategy, high-impact creativity, and cutting-edge technology to help brands evolve with purpose, scale with impact, and endure over time.

By bridging insight and execution, we design transformations that are as culturally relevant as they are commercially effective — built not just for today, but for what's next.

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Where
‍ideas meet execution

Strategy
‍& Brand Consulting

Brand consultancy is a key lever for aligning business ambition with market relevance. We work alongside leadership teams to define sharp positioning, clarify strategic priorities, and turn your brand into a growth engine and a driver of internal alignment.

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Content
& Influence

Content and influence are strategic drivers of visibility and growth. We support you in designing and deploying high-impact editorial ecosystems and influence strategies that enhance your brand authority, generate qualified engagement, and deliver measurable results.

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Technology
& Digital Activation

Technology is a powerful tool in the service of brand management. We help you select, combine, and deploy the right solutions to drive performance within your team.

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Highlights

Making brands stand out and Thrive

Managing change as part of a major rebranding project (AccorInvest becomes Essendi)

Essendi (formerly AccorInvest) reinvents itself with ELEF: new brand image, content, and roadshows to engage 25,000 employees.

Creating a breakthrough innovation in cognac

To renew its audience, Louis XIII launched The Drop: a bold new cognac format and brand to reach new targets and embody timeless luxury.

Organizing the graphic assets of a luxury brand

Louis XIII tasked ELEF to audit 100+ media and unify its brand codes, ensuring consistent 360° communication across all touchpoints.

3 brand pillars

More than a partner a force for change

  • Strategic creativity

    As our customers will tell you, our recommendations are there to help you see your problems in a different light and provide practical solutions to help you grow.

  • More than just a company, an ecosystem

    ELEF is more than a strategy studio. We connect the 3 essential components of your success (Strategy, Content, Technology) with an ecosystem of brilliant experts at negotiated prices to save you time... and money.

  • Driving change to generate impact

    Experience has taught us that what counts is the ability to drive change. Our methodology is effective because it goes beyond the deliverable and takes the time to involve all the stakeholders in your company.

Let’s get to know each other

Let's get to know each other
ELEF team with Mathieu Sakkas, Myosotis Carlier, Daphné Duthoit, Fanny Thubé
Mathieu Sakkas
Founder
Daphné Duthoit
Strategy Consultant
Fanny Thubé
Office Manager
Myosotis Carlier
Art Director

Meet
‍the team

Our team brings together top-tier experts in strategy, design, content, and technology. We combine high standards with hands-on collaboration to deliver premium work—without ever losing the energy, clarity, or engagement that make a project truly impactful.

An obsession with results:
‍Real business and human impact

80%
of our customers note an improvement in their brand after our intervention
ELEF team with Mathieu Sakkas, Myosotis Carlier, Daphné Duthoit, Fanny Thubé
100%
of our customers return for a second mission

What our clients say

( 5/01 ) “I’ve been working with Mathieu for over six years, and he’s far more than a consultant. He operates as a shadow member of our governance, consistently helping us drive forward our most ambitious ideas—even in highly complex environments. His strength lies in turning vision into tangible impact without ever compromising the original power of the idea. He’s a strategic and creative ally, essential when it comes to leading deep brand transformations."
Virginie Duval
Virginie Duval
Communication Director (Public Senat, France Galop, LNB)

Your prescription
of ideas

Explore our analyses and findings on brands, society, culture and innovation.

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Jaguar's Rebranding: The Agency's Role in the Success and Failure of the Project

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The Difficult Job of Being a CMO or Communications Director Today

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Progressive Brands: Episode 1

Iceberg with an hidden part under the water
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Brand Architecture: A Business Performance Lever in Both B2C and B2B